Beta Technologies (BETA) shares have rallied more than 20% this week after Amazon (AMZN) announced a sizable 5.3% stake in the electric aviation company. AMZN investment signals confidence in BETA’s tech and market potential, potentially improving its access to capital and boosting its credibility with customers. More News from Barchart Despite this surge, BETA stock remains down more than 30% versus its year-to-date high. www.barchart.com Does Amazon News Warrant Buying BETA Stock? AMZN stake could ...